<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    let m=new Map()

    // 添加元素
    m.set('name','尚硅谷')
    m.set('change',function () {
        console.log('我们可以改变你')
    })
    let key={
        school:'shfschool'
    }
    m.set(key,['武汉','北京','上海'])

    // size
    console.log(m.size)

    // 删除
    m.delete('name')

    // 获取
    console.log(m.get('change'))
    console.log(m.get(key))

    // 清空
    // m.clear()

    // 遍历
    for (let v of m){
        console.log(v)
    }

    console.log(m)
</script>
</body>
</html>
